<template>
  <div class="upload-file">
    <el-upload ref="uploadRef" v-model:file-list="fileList" :data="createReqVO" :action="uploadUrl1"
      :auto-upload="autoUpload" :before-upload="beforeUpload" :disabled="disabled" :drag="drag"
      :http-request="httpRequest1" :limit="props.limit" :multiple="props.limit > 1" :on-error="excelUploadError"
      :on-exceed="handleExceed" :on-preview="handlePreview" :on-remove="handleRemove" :on-success="handleFileSuccess"
      :show-file-list="false" class="upload-file-uploader" name="file">
      <el-button v-if="!disabled" type="primary">
        <Icon icon="ep:upload-filled" />
        选取文件
      </el-button>
      <template v-if="isShowTip && !disabled" #tip>
        <div style="font-size: 13px">
          大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b>
        </div>
        <!-- <div style="font-size: 13px">
          格式为 <b style="color: #f56c6c">{{ fileType.join('/') }}</b> 的文件
        </div> -->
      </template>
      <!-- TODO @puhui999：1）表单展示的时候，位置会偏掉，已发微信；2）disable 的时候，应该把【删除】按钮也隐藏掉？ -->
    </el-upload>
    <div class="fList" v-if="fileList">
      <el-table class=" mt-10" border
        :header-cell-style="{ backgroundColor: '#f2f2f2', fontWeight: 700, color: '#909399', textAlign: 'left' }"
        :stripe="true" :show-overflow-tooltip="true" :data="fileList">
        <el-table-column label="报价单编号" prop="quoteNumber" />
        <el-table-column label="文件名" prop="fileName" />
        <el-table-column label="上传日期" width="160" prop="createTime" :formatter="handleDate" />
        <el-table-column label="操作" width="200">
          <template #default="{ row }">
            <el-link :underline="false" @click="downloadFile(row)" target="_blank" type="primary">
              下载
            </el-link>
            <el-button link type="danger" @click="handleRemove(row)"> 删除</el-button>
          </template>
        </el-table-column>
      </el-table>
    </div>
  </div>
</template>
<script lang="ts" setup>
import { propTypes } from '@/utils/propTypes'
import type { UploadInstance, UploadProps, UploadRawFile, UploadUserFile } from 'element-plus'
import { isString } from '@/utils/is'
import { useUpload } from '@/components/UploadFile/src/useUpload'
import { formatDate } from '@/utils/formatTime';
import { QuotationApi } from '@/api/quote/quotation'

defineOptions({ name: 'UploadFile' })

const message = useMessage() // 消息弹窗
const emit = defineEmits(['update:modelValue'])

const props = defineProps({
  quoteNumber: propTypes.number.def(0), // 引用数量
  modelValue: propTypes.oneOfType<string | string[]>([String, Array<String>]).isRequired,
  fileType: propTypes.array.def(['doc', 'xlsx', 'ppt', 'txt', 'pdf']), // 文件类型, 例如['png', 'jpg', 'jpeg']
  fileSize: propTypes.number.def(20), // 大小限制(MB)
  limit: propTypes.number.def(5), // 数量限制
  autoUpload: propTypes.bool.def(true), // 自动上传
  drag: propTypes.bool.def(false), // 拖拽上传
  isShowTip: propTypes.bool.def(true), // 是否显示提示
  disabled: propTypes.bool.def(false) // 是否禁用上传组件 ==> 非必传（默认为 false）
})

// ========== 上传相关 ==========
const uploadRef = ref<UploadInstance>()
const uploadList = ref<UploadUserFile[]>([])
const fileList = ref<any>([])
const uploadNumber = ref<number>(0)

const { uploadUrl1, httpRequest1 } = useUpload()

const createReqVO = {
  quoteNumber: props.quoteNumber,
}

onMounted(() => {
  setTimeout(() => {
    fileList.value = props.modelValue
  }, 222);
}
)

const downloadFile = async (row: any) => {
  const res = await QuotationApi.downloadAttachment(row.fileId)
  const blob = new Blob([res], { type: 'application/octet-stream' })
  const url = URL.createObjectURL(blob)
  const link = document.createElement('a')
  link.href = url
  link.download = row.fileName
  link.click()
}


const handleDate = (row: any) => {
  return formatDate(row.createTime)
}

// 文件上传之前判断
const beforeUpload: UploadProps['beforeUpload'] = (file: UploadRawFile) => {
  if (fileList.value.length >= props.limit) {
    message.error(`上传文件数量不能超过${props.limit}个!`)
    return false
  }
  // let fileExtension = ''
  // if (file.name.lastIndexOf('.') > -1) {
  //   fileExtension = file.name.slice(file.name.lastIndexOf('.') + 1)
  // }
  // const isImg = props.fileType.some((type: string) => {
  //   if (file.type.indexOf(type) > -1) return true
  //   return !!(fileExtension && fileExtension.indexOf(type) > -1)
  // })
  const isLimit = file.size < props.fileSize * 1024 * 1024
  // if (!isImg) {
  //   message.error(`文件格式不正确, 请上传${props.fileType.join('/')}格式!`)
  //   return false
  // }
  if (!isLimit) {
    message.error(`上传文件大小不能超过${props.fileSize}MB!`)
    return false
  }
  message.success('正在上传文件，请稍候...')
  uploadNumber.value++
}

// 文件上传成功
const handleFileSuccess: UploadProps['onSuccess'] = (res: any): void => {
  message.success('上传成功')
  // 删除自身
  const index = fileList.value.findIndex((item) => item.response?.data === res.data)
  fileList.value.splice(index, 1)
  uploadList.value.push(res.data)
  console.log()
  if (uploadList.value.length == uploadNumber.value) {
    fileList.value.push(...uploadList.value)
    uploadList.value = []
    uploadNumber.value = 0
    emitUpdateModelValue()
  }
}
// 文件数超出提示
const handleExceed: UploadProps['onExceed'] = (): void => {
  message.error(`上传文件数量不能超过${props.limit}个!`)
}
// 上传错误提示
const excelUploadError: UploadProps['onError'] = (): void => {
  uploadNumber.value--
  message.error('导入数据失败，请您重新上传！')
}
// 删除上传文件
const handleRemove = async (file) => {
  const index = fileList.value.map((f) => f.fileId).indexOf(file.fileId)
  if (index > -1) {
    fileList.value.splice(index, 1)
    emitUpdateModelValue()
    const res = await QuotationApi.deleteAttachment({ fileId: file.fileId, quoteNumber: file.quoteNumber })
    if (res) {
      message.success('删除成功')
    } else {
      message.error('删除失败')
    }
  }
}
const handlePreview: UploadProps['onPreview'] = (uploadFile) => {
  console.log(uploadFile)
}


// 发送文件链接列表更新
const emitUpdateModelValue = () => {
  // 情况1：数组结果
  let result: string | string[] = fileList.value.map((file) => file.url!)
  // 情况2：逗号分隔的字符串
  if (props.limit === 1 || isString(props.modelValue)) {
    result = result.join(',')
  }
  emit('update:modelValue', result)
}
</script>
<style lang="scss" scoped>
.upload-file-uploader {
  margin-bottom: 5px;
}

:deep(.upload-file-list .el-upload-list__item) {
  position: relative;
  margin-bottom: 10px;
  line-height: 2;
  border: 1px solid #e4e7ed;
}

:deep(.el-upload-list__item-file-name) {
  max-width: 250px;
}

:deep(.upload-file-list .ele-upload-list__item-content) {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: inherit;
}

:deep(.ele-upload-list__item-content-action .el-link) {
  margin-right: 10px;
}
</style>
